90 lines
4.6 KiB
Markdown
90 lines
4.6 KiB
Markdown
[[!meta author="spalax"]]
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[[!template id=plugin name=pageversion author="[[Louis|spalax]]"]]
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This plugin makes it possible to manage different versions of the same page, allowing to:
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- make older/newer versions available;
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- highlight the latest version.
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[[!toc]]
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# Rationale
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On my personal website/blog, I publish articles which I sometimes update. Sometimes, I add a few lines of text with a ``Updated on DATE.`` message; other times, I rewrite the whole article. In this latter case, I want:
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- the main version of the article to be the latest one;
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- oldest versions still to be available;
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- the main list of my articles to list only the latest version of each article.
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# Example
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For instance, on my personal website, article [one](//ababsurdo.fr/pedago/sismologie/20150110/) has been updated to [two](//ababsurdo.fr/pedago/sismologie/20150819/).
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- They both contain the directive `\[[!versionof parent]]`, marking them as a version of the [main article](//ababsurdo.fr/pedago/sismologie) (which happens to be their parent page).
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- On the [old article](//ababsurdo.fr/pedago/sismologie/20150819/), links to the other articles (only one here) are available.
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- On the [page listing my articles](//ababsurdo.fr/pedago), only the latest article appears.
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- The [main page](//ababsurdo.fr/pedago/sismologie) lists all versions of this article, and redirects to the latest one.
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# List of directives and pagespecs
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Pages are marked as versions as other pages using tags (subtags of `_pageversion/*`). Directive ``\[[!versionof]]`` simply add the appropriate tag to the current page (thus, one can ignore this directive, but it makes things easier).
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Pages can be marked as versions of another page (e.g. ``foo/version1`` and ``foo/version2`` are versions of page ``foo``), or versions of an arbitrary abstract page (called *label* later). There is no conflict between them (that is, pages marked as a version of page ``foo`` and as a version of label ``foo`` are not a version of the same page).
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## Directive `versionof`
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Marks current page as a version of another page. Its main forms are:
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- `\[[!versionof name=foo]]` Mark current page as a version of page ``foo`` (page ``foo`` is searched using the same [[linking rules|ikiwiki/SubPage/LinkingRules]] as a [[ikiwiki/WikiLink]]).
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- `\[[!versionof label=bar]]` Mark current page as a version of some abstract object labelled ``bar``.
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It may be convenient to refer to some particular page. Thus, those alternative forms are also available:
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- `\[[!versionof name]]` Mark current page as a version of itself.
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- `\[[!versionof parent]]` Mark current page as a version of its parent page.
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## Template `otherversions`
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To add a list to the other versions of a page (both older and newer), a template is provided. It is called with:
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\[[!template id=otherversions version=VERSION template=INLINETEMPLATE]]
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Where:
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- *(Required)* Pages that are a version of `VERSION` are listed (for instance ``\[[!template id=otherversions version=name=foo]]``).
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- *(Optional)* Template `INLINETEMPLATE` is used (instead of the default `otherversionpage` template) in the [[ikiwiki/directive/inline]] directive listing the other pages.
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## Pagespec `versionof`
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A pagespec can match pages marked as a version of something using the pagespec `versionof`. It accepts the same arguments as the arguments as the ``versionof`` directive, that is:
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- `versionof(name=foo)`: Match pages which are a version of page ``foo``.
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- `versionof(name)`: Match pages which are a version of the current page.
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- `versionof(parent)`: Match pages which are a version of the parent page.
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- `versionof(label=bar)`: Match pages which are a version of some abstract object labelled ``bar``.
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Moreover, it takes one additional argument:
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- `versionof(any)`: Match pages which are a version of anything.
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## Pagespec `latestversion`
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An additional pagespec `latestversion` is provided. It accepts the same arguments as the `versionof` pagespec (that is:
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`latestversion(name=foo)`,
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`latestversion(name)`,
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`latestversion(parent)`,
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`latestversion(label=bar)`,
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`latestversion(any)`) but only the most recent page is matched.
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## Pagespec `latest_tagged`
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As a side effect, this plugin also provides the `latest_tagged(TAG)` pagespec. It matches one single page: the most recent page tagged with the given tag.
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## Directive `redirect`
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Directive ``\[[!redirect]]`` (from the [[redirect]] plugin) can be used together with this package. For instance, a page containing the directive ``\[[!redirect pages="versionof(page)"]]`` will redirect to the most recent page marked as a version of the current page.
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# Download and Install
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Code and documentation can be found here : [[https://spalax.frama.io/gresille-ikiwiki/pageVersion]].
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